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Can a commutator be made to produce dc current turning in both directions?

Discussion in 'General Electronics Discussion' started by James Robieson, Oct 16, 2016.

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  1. James Robieson

    James Robieson

    3
    0
    Oct 16, 2016
    Can a commutator be made to produce dc current turning in both directions?
     
  2. Minder

    Minder

    3,102
    664
    Apr 24, 2015
    It does, if referring to a DC motor/generator.
    If wishing to maintain a certain polarity regardless of direction, then a simple bridge rectifier on the output will do it.
    M.
     
    hevans1944 and James Robieson like this.
  3. James Robieson

    James Robieson

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    Oct 16, 2016
    OK Minder,Thank you
     
  4. daberbaber

    daberbaber

    18
    1
    Feb 2, 2012
    Minder's comment answers your question and gives a great tip for maintaining polarity of the voltage coming from the commutator. And the field is supplied by a PM permanent magnet. In a car system however and in many other motors, the field is supplied by an outside source and this will complicate any attempts to use a motor for a generator/alternator.
     
  5. James Robieson

    James Robieson

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    Oct 16, 2016
    Ok daberbaber
    Thank you, that clears up a lot things.
     
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